U.S.-Austria Cooperative Research: Fracture Mechanics Case Studies of Concrete Dams

该奖项支持安东尼·R博士。年康奈尔大学的英格拉菲亚 与该研究所的汉斯·P·罗斯曼尼斯博士进行的研究合作 维也纳技术大学力学系教授。 目标 他们的合作研究是为了进一步了解 在大型混凝土坝开裂的过程中，创建一个模拟 诊断裂纹原因和评估维修的能力 程序，并纳入由此产生的新知识和 改进新坝建设设计程序的经验。 奥地利在混凝土建筑方面处于世界领先地位 水坝 目前，奥地利和美国的一些大坝的案例研究 正在维修或建设中的将与合作执行 水坝的所有者或经营者。 模拟将基于 高级结构力学（包括断裂力学、损伤 分析和失效分析），数值模拟方法 （包括有限元和边界元建模），以及 最先进的交互式计算机图形。 特别强调 将给出裂缝避免和控制的问题， 设计，以及技术上合理和具有成本效益的修复 水坝 混凝土坝的裂缝是一个相当重要的问题。 从这些个案研究中获得的结果应能指导和支持 设计者、建造者、操作者和维修人员 混凝土大坝 该项目的合作性质将加快 发展模拟能力，拓宽数据和知识 建立双方的基础，促进业主更好的合作， 操作人员的大坝，并转移实际故障分析 向美国提供专业知识，向奥地利提供3D模拟专业知识。

This award supports Dr. Anthony R. Ingraffea of Cornell University in a research collaboration with Dr. Hans P. Rossmanith of the Institute of Mechanics of the Technical University of Vienna. The objectives of their cooperative research are to further the understanding of the process of cracking in large concrete dams, to create a simulation capability to diagnose the cause of cracking and evaluate repair procedures, and to incorporate the resulting new knowledge and experience into improved design procedures for new dam construction. Austria is among the world leaders in the construction of concrete dams. Case studies of a number of Austrian and U.S. dams currently under repair or construction will be performed with the cooperation of the owners or operators of the dams. Simulations will be based on advanced structural mechanics (including fracture mechanics, damage analysis, and failure analysis), numerical modelling methods (including finite and boundary elements modelling), and state-of-the-art interactive computer graphics. Special emphasis will be given to the problems of crack avoidance and control by design, and technically sound and cost-effective repair of cracked dams. Cracking in concrete dams is a problem of considerable importance. The results obtained from these case studies should guide and support designers, builders, operators, and repair personnel of large concrete dams. The cooperative nature of the project will hasten the development of simulation capability, broaden the data and knowledge bases on both sides, engender better cooperation from owners and operators of the dams, and transfer practical failure analysis expertise to the U.S. and 3-D simulation expertise to Austria.